<s>
Perian	B-Operating_System
is	O
a	O
discontinued	O
open-source	B-Application
QuickTime	B-Application
component	I-Application
that	O
enabled	O
Apple	O
Inc.	O
’	O
s	O
QuickTime	B-Application
to	O
play	O
several	O
popular	O
video	B-General_Concept
formats	I-General_Concept
not	O
supported	O
natively	O
by	O
QuickTime	B-Application
on	O
macOS	B-Application
.	O
</s>
<s>
It	O
was	O
a	O
joint	O
development	O
of	O
several	O
earlier	O
open	O
source	O
components	O
based	O
on	O
the	O
multiplatform	O
FFmpeg	B-Library
project	O
's	O
libavcodec	B-Language
and	O
libavformat	B-Library
,	O
as	O
well	O
as	O
liba52	B-Application
and	O
libmatroska	O
.	O
</s>
<s>
On	O
15	O
May	O
2012	O
,	O
the	O
Perian	B-Operating_System
project	O
managers	O
announced	O
on	O
their	O
website	O
that	O
they	O
are	O
shutting	O
down	O
support	O
for	O
the	O
project	O
.	O
</s>
<s>
In	O
the	O
announcement	O
,	O
they	O
recommended	O
that	O
users	O
look	O
to	O
other	O
products	O
,	O
such	O
as	O
Niceplayer	O
,	O
VLC	B-Application
or	O
MPlayer	B-Application
OS	I-Application
X	I-Application
.	O
</s>
<s>
They	O
indicated	O
that	O
Perian	B-Operating_System
's	O
source	O
code	O
would	O
be	O
posted	O
online	O
for	O
any	O
developer	O
who	O
wanted	O
to	O
continue	O
with	O
the	O
project	O
.	O
</s>
<s>
One	O
continuation	O
based	O
on	O
the	O
source	O
code	O
is	O
actively	O
maintained	O
but	O
does	O
not	O
support	O
QuickTime	B-Application
for	O
OS	B-Operating_System
X	I-Operating_System
Mavericks	I-Operating_System
or	O
later	O
.	O
</s>
<s>
Perian	B-Operating_System
lent	O
support	O
for	O
many	O
combinations	O
of	O
video	O
,	O
audio	O
,	O
text	O
,	O
and	O
container	O
formats	O
to	O
QuickTime	B-Application
,	O
including	O
the	O
following	O
:	O
</s>
